<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <link rel="stylesheet" href="base.css">
    <link rel="stylesheet" href="1.css">
    <title>别踩白块</title>
</head>

<body>
    
    <h2>score</h2>
    <h2 id="score">0</h2>
    
    <div id="main">
        <div id="con"></div>
    </div>
    </div>
    </div>
    </div>
    <div class="btn">
        <button id="start">开始</button>
        <button id="end">结束</button>
    </div>
    <script src="1.js"></script>
</body>

</html>